Icyblade Dai 6e378452f2 coding style update (#2752)
* coding style update

Current coding style varies(for example: the mixed use of single quote and double quote), and it will be confusing, especially for new users.
This PR will try to follow proposal of PEP8, make the documents more readable.

* minor fix
2017-10-01 08:42:15 -04:00
..
2016-01-16 11:52:33 -08:00
2017-10-01 08:42:15 -04:00